Logic would say the odor would be at it's Max when you opened door of oven. When he first got into the auto the stench would've made anyone look to see if a rat died or maybe they left Taco Bell bag or OMG I forgot to get MY CHILD after breakfast!!! Call 911. Wait I can't do that, I was a po-lice dispatcher in Tuscaloosa and I learned quickly, your conversation is recorded and can be used against you. Wait, I'm supposed to meet friends for drinks, etc. Why don't I drive somewhere and act like I just discovered my precious baby is in the back. It's only another 10 minutes, that won't make a difference in whether my son lives.
Surely everyone will understand that geez, I'm an IT specialist for a Fortune 500 Company. I had a busy day and simply forgot the little one. OMG. Somebody call 911 for me!!!!